Restore `rel='nofollow'` for comment reply links to reduce extra crawling by search engines.

This reverts [16230], which didn't have enough review at the time of commit.

props joostdevalk.
see #22889, #18547, #16881.
Built from https://develop.svn.wordpress.org/trunk@33047


git-svn-id: http://core.svn.wordpress.org/trunk@33018 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/comment-template.php

@@ -1437,7 +1437,7 @@ function get_comment_reply_link( $args = array(), $comment = null, $post = null
 			$args['add_below'], $comment->comment_ID, $args['respond_id'], $post->ID
 		);
 
-		$link = sprintf( "<a class='comment-reply-link' href='%s' onclick='%s' aria-label='%s'>%s</a>",
+		$link = sprintf( "<a rel='nofollow' class='comment-reply-link' href='%s' onclick='%s' aria-label='%s'>%s</a>",
 			esc_url( add_query_arg( 'replytocom', $comment->comment_ID, get_permalink( $post->ID ) ) ) . "#" . $args['respond_id'],
 			$onclick,
 			esc_attr( sprintf( $args['reply_to_text'], $comment->comment_author ) ),

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.3-beta1-33046';
+$wp_version = '4.3-beta1-33047';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.